Remove unnecessary Intel(R) WiFi firmware files

How-to

The following steps are needed for creating a stripped version for AirportItlwm.kext removing all unnecessary WiFi firmware files and therefore (maybe) speeding-up just a little the boot process:

1. Clone the OpenIntelWireless repo: git clone https://github.com/OpenIntelWireless/itlwm.git
2. Open the folder itlwm where it's cloned to
3. Open Xcode:
   • press File -> New -> File...
   • on the Search bar/Filter type shell and choose to create a new Shell Script file
4. Copy the following code into it:

#!/bin/bash

# remove all local changes
git reset --hard HEAD
rm -rf build

# pull latest code
git pull

# remove generated firmware
rm include/FwBinary.cpp

# remove firmware for other wifi cards - DELETE OR CHANGE TO YOUR CARD
find itlwm/firmware/ -type f ! -name 'iwm-8265-*' -delete


# generate firmware
xcodebuild -project itlwm.xcodeproj -target fw_gen -configuration Release -sdk macosx

# build the kexts
## 1. itlwm.kext
xcodebuild -project itlwm.xcodeproj -target itlwm -configuration Release -sdk macosx

## 2. AirportItlwm Mojave
xcodebuild -project itlwm.xcodeproj -target AirportItlwm-Mojave -configuration Release -sdk macosx

## 3. AirportItlwm Catalina
xcodebuild -project itlwm.xcodeproj -target AirportItlwm-Catalina -configuration Release -sdk macosx

## 4. AirportItlwm Big Sur
xcodebuild -project itlwm.xcodeproj -target AirportItlwm-Big\ Sur -configuration Release -sdk macosx

## 5. AirportItlwm Monterey
xcodebuild -project itlwm.xcodeproj -target AirportItlwm-Monterey -configuration Release -sdk macosx

# Location of Kexts
echo "You kexts are in build/Release!!"
echo " "

5. Save shell script as (for example) run-script.sh and place it in the root directory of the cloned itlwm folder
6. Clone MacKernelSDK repo with the command git clone https://github.com/acidanthera/MacKernelSDK.git and place its folder inside itlwm folder
7. Open Terminal, navigate to itlwm folder and then run the command sh run-script.sh

Done, you'll find your kexts under build/Release folder.

Source: OpenIntelWireless #353